"The objective of this research was to test the hypothesis that Global Average Surface Temperature (GAST) data produced by NOAA, NASA and HADLEY are sufficiently credible estimates of global average temperatures, such that they can be relied upon for climate modelling and policy analysis purposes.... The conclusive findings of this research are that the three GAST data sets are not a valid representation in reality. In fact, the magnitude of their historial data adjustments, that removed their cyclical temperature patterns, are totally inconsistent with published and credibe U.S. and other temperature data."